Return-Path: Received: from rly-me09.mx.aol.com (rly-me09.mail.aol.com [172.20.83.43]) by air-me08.mail.aol.com (v120.9) with ESMTP id MAILINME084-9dc47260ac71a7; Mon, 29 Oct 2007 12:31:16 -0400 Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by rly-me09.mx.aol.com (v120.9) with ESMTP id MAILRELAYINME098-9dc47260ac71a7; Mon, 29 Oct 2007 12:31:04 -0400 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1ImXVZ-0003j3-BZ for rs_out_1@blacksheep.org; Mon, 29 Oct 2007 16:30:33 +0000 Received: from [193.82.116.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1ImXVY-0003iu-V8 for rsgb_lf_group@blacksheep.org; Mon, 29 Oct 2007 16:30:32 +0000 Received: from smtp814.mail.ird.yahoo.com ([217.146.188.74]) by relay1.thorcom.net with smtp (Exim 4.63) (envelope-from ) id 1ImXVU-00074g-U7 for rsgb_lf_group@blacksheep.org; Mon, 29 Oct 2007 16:30:32 +0000 Received: (qmail 49525 invoked from network); 29 Oct 2007 16:30:03 -0000 DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=s1024; d=btinternet.com; h=Received:X-YMail-OSG:From:To:References:Subject:Date:Message-ID:MIME-Version:Content-Type:Content-Transfer-Encoding:X-Mailer:In-Reply-To:X-MimeOLE:Thread-Index; b=djAHPOrARmlp3lPu+De3l0nacRKzTFCsAW+m6IPbTJNZy+XO49wc7L0ZaK5m8zm/Em+NRBJ1F/S+6RMu0gnF+BbTfJSJtEtGJ9lFMFTBwFBw3uSNNncpE+33BIoPcV4Irjky4ywASbOpvTLYlkipKzm2YPkCKa/IH1jl67utbKk= ; Received: from unknown (HELO ken) (ken.h.wright@btinternet.com@86.134.103.176 with login) by smtp814.mail.ird.yahoo.com with SMTP; 29 Oct 2007 16:30:02 -0000 X-YMail-OSG: 5EEUBWYVM1mFGy1GUNLVgu0NIWZ8kJqLRxglsGQuYi4G75RtGIApmCYMbYcmDHjUrKPNb80XtJyPEXStUcHgiQiIpLCwo2OM_Emrfw_w5iFILArDGCnYQTuFbhH8WZhxs91_3YgqEAKTnR9TpOjUrYb9 From: "Ken Wright" To: References: Date: Mon, 29 Oct 2007 16:30:19 -0000 Message-ID: <000901c81a48$ffa574a0$0201a8c0@ken> MIME-Version: 1.0 X-Mailer: Microsoft Office Outlook 11 In-Reply-To: X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.3198 Thread-Index: AcgaIzqj14OD2SZ6QwW8Fsj0Eb3aAgAJQxwg X-Karma: 0: DomainKey-Status: good (testing) X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,none Subject: LF: RE: Chebyshev Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.0 required=5.0 tests=none autolearn=no version=2.63 X-SA-Exim-Scanned: Yes Sender: owner-rsgb_lf_group@blacksheep.org Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group X-SA-Exim-Rcpt-To: rs_out_1@blacksheep.org X-SA-Exim-Scanned: No; SAEximRunCond expanded to false X-AOL-IP: 193.82.116.20 X-AOL-SCOLL-AUTHENTICATION: listenair ; SPF_helo : X-AOL-SCOLL-AUTHENTICATION: listenair ; SPF_822_from : Hi Laurence. Try www.aade.com You will have to put up with the site adverts, the filter design covers Chebyshev, Butterworth etc. I have tried it and it is ok, it will even do a full analysis for and design the inductors Regards Ken M0KHW IO91TV -----Original Message----- From: owner-rsgb_lf_group@blacksheep.org [mailto:owner-rsgb_lf_group@blacksheep.org] On Behalf Of Laurence KL1X Sent: 29 October 2007 11:58 To: rsgb_lf_group@blacksheep.org Subject: LF: Chebyshev Anyone point me to an online tool for designing LPF's for say 5 7 or 9 pole Chebyshev's on LF or HF? ps. Mr mail service hasnt plonked this months Radcom onto my desk and not expecting it for another week or so; this is typical for a routing that includes UK, Houston thence Singapore. with thanks Laurence 9V1 LF _________________________________________________________________ Peek-a-boo FREE Tricks & Treats for You! http://www.reallivemoms.com?ocid=TXT_TAGHM&loc=us